I would say no. Because the 2001 has a different series 3800, The
new 3800 in the 04 might need more power or less depending on
how it was engineered I WOULD DEFIANTLY NOT DO THIS YOU
CAN DESTROY YOUR ENTIRE ELECTRICAL SYSTEM!!

Not. If it fits and it works it will be fine. Unless Sean can explain why it would affect the electrical system. But on the other hand, I do not like taking parts from something different and try to make them work. A lot of the time it cost you more money trying to cut corners.

The reason it COULD hurt the electrical system is because lets
say the 04 needs less power to turn over the engine. The 01
starter would try to start the engine too strong and this COULD
fry the brain to the starter which could hurt the CPU. I wouldn't do
this but its up to you and it might be perfectly fine, but if its the
only option you have its up to you.

the cpu receives and sends information from many different
places from the car. It calculates this information to how the car is
running. So if it can tell that the car is starting hard it will try to fix
it. Over a period of time this could overload the cpu when it cant
fix the problem by adjusting voltage to other ignition parts. This is
very rare but it could happen. more probable problems of putting
the 01 starter in the 04 is that it will not work or if it does it could
hurt the engine just like a 3800 supercharge starter will not work
in a 3800 naturally aspirated because it puts too much power to
the engine to start it. I pointed out a few problems with putting the
01 starter into and 04 might cause these problems. If i was going
to put the starter in i would only do it for emergencies and
change it as soon as possible with the correct starter. The
electrical problems are rare but they can happen.

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